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20.She tried two different methods,yet ______ of them seemed to work very well.(  )
A.neitherB.noneC.eachD.both

分析 我尝试了两种不同的方法,但似乎没有一个起作用.

解答 答案:A.考查不定代词.根据"two different methods"可以确定,所指事物有两者.结合句意"yet"推测出,两个方法都没有效.用neither,表示两者都不.none表示特指三者及三者以上都没有,each指每一个,both指两者都.

点评 考查不定代词的题,要在题干中找到所指代的事物,并确定是泛指还是特指.

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